diff --git a/NDecrypt.Core/DSTool.cs b/NDecrypt.Core/DSTool.cs
index 3896106..bfefcf3 100644
--- a/NDecrypt.Core/DSTool.cs
+++ b/NDecrypt.Core/DSTool.cs
@@ -27,7 +27,7 @@ namespace NDecrypt.Core
             {
                 // If the output is provided, copy the input file
                 if (output != null)
-                    File.Copy(input, output);
+                    File.Copy(input, output, overwrite: true);
                 else
                     output = input;
 
@@ -79,7 +79,7 @@ namespace NDecrypt.Core
             {
                 // If the output is provided, copy the input file
                 if (output != null)
-                    File.Copy(input, output);
+                    File.Copy(input, output, overwrite: true);
                 else
                     output = input;
 
diff --git a/NDecrypt.Core/ThreeDSTool.cs b/NDecrypt.Core/ThreeDSTool.cs
index 4abf317..f4aa503 100644
--- a/NDecrypt.Core/ThreeDSTool.cs
+++ b/NDecrypt.Core/ThreeDSTool.cs
@@ -48,7 +48,7 @@ namespace NDecrypt.Core
             {
                 // If the output is provided, copy the input file
                 if (output != null)
-                    File.Copy(input, output);
+                    File.Copy(input, output, overwrite: true);
                 else
                     output = input;
 
@@ -467,7 +467,7 @@ namespace NDecrypt.Core
             {
                 // If the output is provided, copy the input file
                 if (output != null)
-                    File.Copy(input, output);
+                    File.Copy(input, output, overwrite: true);
                 else
                     output = input;